放矿
2.A summary introduction is made of the electrovibrating ore-drawing techniques that have been used in Shizishan Copper Mine,which includes the electrovibrating ore drawing of the ore pass in middle section,the one for in-stope ore drawing,the one for the main underground ore bin and the one for the coarse ore bin in the concentrator.
3.A RESEARCH ON ORE-DRAWING ORDER OF A DIP AT SLOW ANGLE AND MIDDLE THICKNESS OREBODY
4.The ground base of the newly added chute in 4＃ tailings reservoir at Dexing Copper Mine is characterised by thick weathered layer,loose structure,fractured zone and landslip mass accumulation.As a result,the ground has a great subsidence and inefficient carrying capacity.In view of this, the grouting technology was adopted to reinforce the chute ground base.The on-site testing shows that the subsidence of the chute has been efficiently controlled and the carrying capacity of the ground base improved so that the stability requirement has been met.
5.The final conclusion is as follows, The oredrawing order can be used in mining the dip at slow angle and middle thickness orebodies, it is reckoned that with it being used in mines the ore actual recovery rate is increased by 5％ upon and the ore average dilution rate is spproximately reduced dy 10％.
7.ROCK PRESSURE FEATURE OF STOPE OF LONGWALL CAVING METHOD ALONG DIP IN FULLY MECHANIZED MINING
8.Application of the Light Breaking Props on the Comprehensive Mechanized Mining Faces in Malan Coalmine
9.Placing a Saboteur bomb on it in case he tries to recapture the spike is also a good idea.
10.The mechanism of modification was researched in the process of roasting nature manganese dioxide. It is concluded that different structure of Mn2O3 results in the different discharge capacity of activating MnO2.
